Question

3/x+4/y=18,5/x+6/y=28,then x+y=

Answer 1

Answer:

Step-by-step explanation:

Answer 2

Answer: x=1/2; y=1/3

Step-by-step explanation:let 1/x be 'a' and 1/y be 'b'.

3a+4b=18

5a+6b=28

5(3a+4b=18)

3(5a+6b=28)

15a+20b=90

15a+18b=84

2b=6

b=3.

a=2.

X=1/2 and y=1/3